136346789 has 4 divisors (see below), whose sum is σ = 137752524. Its totient is φ = 134941056.

The previous prime is 136346753. The next prime is 136346797. The reversal of 136346789 is 987643631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73017025 + 63329764 = 8545^2 + 7958^2 .

It is a cyclic number.

It is not a de Polignac number, because 136346789 - 2⁸ = 136346533 is a prime.

It is a super-2 number, since 2×136346789² = 37180893741221042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136349789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702722 + ... + 702915.

It is an arithmetic number, because the mean of its divisors is an integer number (34438131).

Almost surely, 2^136346789 is an apocalyptic number.

It is an amenable number.

136346789 is a deficient number, since it is larger than the sum of its proper divisors (1405735).

136346789 is an equidigital number, since it uses as much as digits as its factorization.

136346789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405734.

The product of its digits is 653184, while the sum is 47.

The square root of 136346789 is about 11676.7627791268. The cubic root of 136346789 is about 514.6930511361.

The spelling of 136346789 in words is "one hundred thirty-six million, three hundred forty-six thousand, seven hundred eighty-nine".